Return-Path: Received: from mtain-mg10.r1000.mx.aol.com (mtain-mg10.r1000.mx.aol.com [172.29.96.210]) by air-mb06.mail.aol.com (v127_r1.1) with ESMTP id MAILINMB063-a7664baa84ea158; Wed, 24 Mar 2010 17:32:26 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mg10.r1000.mx.aol.com (Internet Inbound) with ESMTP id 143E73800017C; Wed, 24 Mar 2010 17:32:24 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NuYAf-0006xJ-Je for rs_out_1@blacksheep.org; Wed, 24 Mar 2010 21:31:25 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NuYAf-0006xA-2Z for rsgb_lf_group@blacksheep.org; Wed, 24 Mar 2010 21:31:25 +0000 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NuYAd-0001Nh-AY for rsgb_lf_group@blacksheep.org; Wed, 24 Mar 2010 21:31:25 +0000 Received: from abelian.netcom.co.uk (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by parrot.netcom.co.uk (Postfix) with ESMTP id 75FD3328BF0 for ; Wed, 24 Mar 2010 21:28:30 +0000 (GMT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by abelian.netcom.co.uk (8.13.1/8.13.1) with ESMTP id o2OLVBF4006703 for ; Wed, 24 Mar 2010 21:31:12 GMT Message-ID: <4BAA849E.6000203@abelian.org> Date: Wed, 24 Mar 2010 21:31:10 +0000 From: Paul Nicholson User-Agent: Thunderbird 2.0.0.14 (X11/20080421) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <2a2c8.24f60f40.38d54e4e@aol.com> <38A51B74B884D74083D7950AD0DD85E82A1B81@File-Server-HST.hst.e-technik.tu-darmstadt.de> <4BA5CFAA.2030007@freenet.de> <56800827A5644E1BB3F320CB51E2300E@Black> <26E279AD762E44FB937A8A7DF8F934BC@Black> <8C7F2923D86B4517B1C156BA499E96E4@Black> <29746320.1346347.1269244849281.JavaMail.fmail@mwmweb078> <4BA7361F.1030702@abelian.org> <4BA7A586.8080307@abelian.org> <38A51B74B884D74083D7950AD0DD85E82A1B87@File-Server-HST.hst.e-technik.tu-darmstadt.de> <0A742B5B9F6A4E84A802D1F98B670E79@JimPC> <20100323130953.2BEFC31E702@smtps01.kuleuven.be> In-Reply-To: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Re: Mini-Whip Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=FROM_ENDS_IN_NUMS autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G x-aol-sid: 3039ac1d60d24baa84e83d5b X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Absolutely agree with Jim, those bias resisters are the worst possible value - maximum noise match! Must be at least 10 times that for the small antenna. Intermod can be a problem here too - very hard to passive low-pass filter before the FET without introducing lots of noise. Just have to have a very linear wide band first stage. -- Paul Nicholson --